Describes the construction, function, and applications of heat pipes. Suggests using the heat pipe to teach principles related to heat transfer and gives sources for obtaining instructional kits for this purpose. (GS)

Describes a variety of experiments and activities such as refractive index by an interference method, Young's third slit, a microscope problem, uses of a hand stroboscope, an acceleration game, an aluminum thermometer, why milk boils over, and others. (BR)

Describes how to construct a traffic light device for use in teaching about wavelengths in physics. (LS)

Describes how to modify an electroscope so the charge can not leak out. (LS)

Provides contributed suggestions in applied topics of secondary school physics. Entries include notes on instructional materials, methodology and laboratory techniques. (CP)

Describes how to convert a wooden block into an apparatus to study friction. (LS)